Your device requires a Thread border router

[Tony]

I am developing a Matter device using the nRF 5340 DK. I had this working and for some reason it isn't anymore. I am using the unmodified light_bulb example from the Nordic SDK. I built and ran it on my 5340 DK.

I have a Smartthings hub that is already connected and working with my Android phone and the Smartthings mobile app.

I get a notification on the phone that there is a new device. I assume that is because it is advertising.

I have the QR code in a browser window from the URL in the debug output.

When I scan it it takes a few seconds to connect and then gives an error:

"Your device requires a Thread border router"

I don't understand. The Smartthings hub is a thread border router and it all configured and ready.

Please help.

[Tony]

You were totally correct. Sorry to have missed that.

Turns out it was because I was getting the pop up notification to set up a device and then doing it that way.

One of the questions along the way was whether to use Google's app or another one and I always chose another one and then chose Smartthings app, but that doesn't seem to actually use the Smartthings app.

My specifically opening the Smartthings app and doing it that way it all works.